2022年Android开发知识点总结

如何获取标题栏和状态栏高度1.获取状态栏高度:decorView是window中最顶层view,可以从window中获取到decorView,然后decorView有个getWindowVisibleDisplayFrame办法可以获取到程序显示区域,涉及标题栏,但不涉及状态栏。于是可以算出状态栏高度了。Rectframe=newRect();getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);intstatusBarHeight=frame.top;2.获取标题栏高度:getWindow().findViewById(Window.ID_ANDROID_CONTENT)这个办法获取到view就是程序不涉及标题栏某些,然后就可以懂得标题栏高度了。intcontentTop=getWindow().findViewById(Window.ID_ANDROID_CONTENT).getTop();//statusBarHeight是上面所求状态栏高度inttitleBarHeight=contentTop-statusBarHeight;---------------------------------------------------------------------------------------------让EditTextView不能输入办法etNearbySearch.setFilters(newInputFilter[]{newInputFilter(){@OverridepublicCharSequencefilter(CharSequencesource,intstart,intend,Spanneddest,intdstart,intdend){returnsource.length()<1?dest.subSequence(dstart,dend):"";}}});---------------------------------------------------------------------------------------------全屏问题,在程序一加载时候就让它是全屏this.requestWindowFeature(Window.FEATURE_NO_TITLE);this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);AndroidManifest.xml中这样写<activityandroid:name=".TextButtonActivity"android:label="@string/app_name"android:theme="@android:style/Theme.NoTitleBar.Fullscreen">---------------------------------------------------------------------------------------------设立控件与否显示属性设立android属性android:visibility此属性意思是此视图与否显示,例如RelativeLayout中android:visibility="gone"其有三个属性:visible显示;invisible显示黑背景条;gone不显示在类中,可以设立其显示与否,setVisibility(View.GONE);不显示setVisibility(View.VISIBLE);显示---------------------------------------------------------------------------------------------为了避免软键盘挡上输入框,可以试试设立<activityandroid:windowSoftInputMode="stateVisible|adjustResize">或者<activityandroid:windowSoftInputMode="stateVisible|adjustPan">---------------------------------------------------------------------------------------------设立控件宽高,用setlayoutparams()办法---------------------------------------------------------------------------------------------做应用时,也许会需要动态变化控件背景图片,如果仅仅是简朴点击,选中之类事件,如果靠程序中写监听代码就显得太麻烦了,在这种状况下,你可以使用selector动态变化控件背景1、在res/drawable目录下建一种handlebackground.xml文献,依照需要,不同状态下建立不同item,并相应相应图片<?xmlversion="1.0"encoding="UTF-8"?><selectorxmlns:android=""><itemandroid:state_pressed="true"android:drawable="@drawable/pressed_application_background_static"/><itemandroid:state_focused="true"android:state_enabled="true"android:state_window_focused="true"android:drawable="@drawable/focused_application_background_static"/><itemandroid:drawable="@android:color/transparent"/></selector>2、在构造layout是引用这个xml<ImageButtonandroid:id="@+id/imagebutton"android:layout_width="wrap_content"android:layout_height="wrap_content"android:src="@drawable/normalbackground"android:background="@drawable/handlebackground"></ImageButton>normalbackground.png为你要显示前景图片pressed_application_background_static.png为点击时背景(系统默以为淡黄色)focused_application_background_static.png为焦点停留时背景(系统默以为橙色)---------------------------------------------------------------------------------------------获得androidsdk版本,并设立动画效果intversion=Integer.valueOf(android.os.Build.VERSION.SDK);if(version>=5){overridePendingTransition(R.anim.zoomin,R.anim.zoomout);//此为自定义动画效果,下面两个为系统两个自定义动画效果XML文献,存储位置为:res/anim/1,动画进入效果:zoomin.xml<?xmlversion="1.0"encoding="utf-8"?><setxmlns:android=""android:interpolator="@android:anim/decelerate_interpolator"><scaleandroid:fromXScale="2.0"android:toXScale="1.0"android:fromYScale="2.0"android:toYScale="1.0"android:pivotX="50%p"android:pivotY="50%p"android:duration="@android:integer/config_mediumAnimTime"/></set>复制代码2,动画退出效果:zoomout.xml<?xmlversion="1.0"encoding="utf-8"?><setxmlns:android=""android:interpolator="@android:anim/decelerate_interpolator"android:zAdjustment="top"><scaleandroid:fromXScale="1.0"android:toXScale=".5"android:fromYScale="1.0"android:toYScale=".5"android:pivotX="50%p"android:pivotY="50%p"android:duration="@android:integer/config_mediumAnimTime"/><alphaandroid:fromAlpha="1.0"android:toAlpha="0"android:duration="@android:integer/config_mediumAnimTime"/></set>---------------------------------------------------------------------------------------------获得控件在屏幕或窗口内坐标int[]location=newint[2];view.getLocationInWindow(location);//获取在当前窗口内绝对坐标view.getLocationOnScreen(location);//获取在整个屏幕内绝对坐标location[0]--->x坐标,location[1]--->y坐标---------------------------------------------------------------------------------------------控件对齐那点事android:gravity属性是对该view内容限定．例如一种button上面text.你可以设立该text在view靠左,靠右等位置．该属性就干了这个．android:layout_gravity是用来设立该view相对与起父view位置．例如一种button在linearlayout里,你想把该button放在靠左靠右等位置就可以通过该属性设立．---------------------------------------------------------------------------------------------几种Menu使用阐明1.OptionsMenu.通过按下手机上MENU键,可以打开OptionsMenu。OptionsMenu最多只能在屏幕最下面显示6个菜单项,称为IconMenu.如果添加了多于6个菜单项,将通过"More"菜单项显示,这种称为ExpandedMenu.当OptionsMenu第一次被打开时,系统将调用ActivityonCreateOptionsMenu(Menumenu)办法,在这个办法中可以通过配备一种XML文献,或者调用Menuadd()办法来添加你想要Menu。Menuadd()办法将返回一种MenuItem对象,你用通过这个对象来配备某些其她属性。例如:icon,shortcut,intent。Menuadd()办法诸多,要注意是itemId这个参数,它唯一性。当选取了一种OptionsMenu时,会调用onOptionsItemSelected(MenuItemitem)办法。如果想修改OptionsMenu,需要重写onPrepareOptionsMenu()办法。方式一,用add()添加:/*Createsthemenuitems*/publicbooleanonCreateOptionsMenu(Menumenu){menu.add(0,MENU_NEW_GAME,0,"NewGame");menu.add(0,MENU_QUIT,0,"Quit").setIcon(R.drawable.menu_quit_icon);returntrue;}/*Handlesitemselections*/publicbooleanonOptionsItemSelected(MenuItemitem){switch(item.getItemId()){caseMENU_NEW_GAME:newGame();returntrue;caseMENU_QUIT:quit();returntrue;}returnfalse;}方式二,通过XML文献添加:在res/menu/下新建options_menu.xml文献:Xml代码<menuxmlns:android=""><itemandroid:id="@+id/new_game"android:title="NewGame"/><itemandroid:id="@+id/quit"android:title="Quit"/></menu>在onCreateOptionsMenu()办法中,我们这样写:Java代码publicbooleanonCreateOptionsMenu(Menumenu){MenuInflaterinflater=getMenuInflater();inflater.inflate(R.menu.options_menu,menu);returntrue;}2.ContextMenu.它需要注册到某个View对象上,当长按这个View大概2秒时间,会浮现这个ContextMenu。为某个View注册ContextMenu是用registerForContextMenu(Viewview)办法来实现。ContextMenu在显示前都会调用onCreateContextMenu来生成menu。onContextItemSelected用来解决选中菜单项。注意:ContextMenu不支持icons和shortcutkeys.Java代码publicvoidonCreateContextMenu(ContextMenumenu,Viewv,ContextMenuInfomenuInfo){super.onCreateContextMenu(menu,v,menuInfo);menu.add(0,EDIT_ID,0,"Edit");menu.add(0,DELETE_ID,0,"Delete");}publicbooleanonContextItemSelected(MenuItemitem){AdapterContextMenuInfoinfo=(AdapterContextMenuInfo)item.getMenuInfo();switch(item.getItemId()){caseEDIT_ID:editNote(info.id);returntrue;caseDELETE_ID:deleteNote(info.id);returntrue;default:returnsuper.onContextItemSelected(item);}}注册这个ContextMenu:registerForContextMenu(getListView());这里getListView()是ListActivity办法,它将返回一种ListView.记住任何一种View对象都可以注册一种ContextMenu。3.SubmenuspublicbooleanonCreateOptionsMenu(Menumenu){booleanresult=super.onCreateOptionsMenu(menu);SubMenufileMenu=menu.addSubMenu("File");SubMenueditMenu=menu.addSubMenu("Edit");fileMenu.add(0,NEW_ID,0,"new");fileMenu.add(0,OPEN_ID,0,"open");fileMenu.add(0,SAV_ID,0,"save");editMenu.add(0,UNDO_ID,0,"undo");editMenu.add(0,REDO_ID,0,"redo");returnresult;}4.MenuFeaturesMenugroups菜单项分组功能:在用Menuadd()办法时,通过参数groupId设立可以实现分组。setGroupVisible()用来显示或者隐藏你菜单组。setGroupEnabled()用来启用或者禁用你菜单组。setGroupCheckable()用来设立你菜单项与否可选。setGroupCheckable()办法有三个参数intgroup,booleancheckable,booleanexclusive。第一种参数是要设立组,第二个参数与否可选,第三个参数为true表达单选,false表达多选。Shortcutkeys快捷键:我们还可以设立快捷键。使用setAlphabeticShortcut(char),setNumericShortcut(int),setShortcut(char,int)可以设立字符,数字,组合(字符+数字)键。注意:ContextMenu不能添加快捷键。---------------------------------------------------------------------------------------------点击查看活动规则TextView及其子类,当字符内容太长显示不下时可以省略号代替未显示字符;省略号可以在显示区域起始,中间,结束位置,或者以跑马灯方式显示文字(textview状态为被选中)。其实现只需在xml中对textviewellipsize属性做相应设立即可。android:ellipsize="start"省略号在开头android:ellipsize="middle"省略号在中间android:ellipsize="end"省略号在结尾android:ellipsize="marquee"跑马灯显示---------------------------------------------------------------------------------------------设立RadioButton前面图片,可定制呵呵<RadioGroupandroid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="vertical"android:checkedButton="@+id/lunch"android:id="@+id/menu"><RadioButtonandroid:text="@string/radio_group_1_breakfast"android:id="@+id/breakfast"android:button="@null"//自己找一种图片就可以/>RadioButton是可以自己定义button显示,我给例子就不显示button---------------------------------------------------------------------------------------------androidlistview分割线可以变化颜色<ListViewandroid:id="@+id/android:list"android:layout_width="wrap_content"android:layout_height="wrap_content"android:divider="#FFCC00"android:dividerHeight="4px"/>---------------------------------------------------------------------------------------------保持屏幕唤醒状态办法1:usePowerManagerandWakeLockAndroidManifest.xml权限:<uses-permissionandroid:name="android.permission.WAKE_LOCK"/>程序中代码:PowerManagerpm=(PowerManager)getSystemService(Context.POWER_SERVICE);PowerManager.WakeLockmWakeLock=pm.newWakeLock(PowerManager.SCREEN_DIM_WAKE_LOCK,"MyTag");//inonResume()callmWakeLock.acquire();...//inonPause()callmWakeLock.release();办法2:usethewindowflagFLAG_KEEP_SCREEN_ON把下面代码加入到程序onCreate办法中:@OverrideprotectedvoidonCreate(Bundleicicle){super.onCreate(icicle);//SetkeepscreenongetWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);}---------------------------------------------------------------------------------------------提示顾客输入有问题直接上代码Animationanimation=AnimationUtils.loadAnimation(this,R.anim.shake);EditTexteditText=(EditText)findViewById(R.id.edittext);editText.startAnimation(animation);里面面fromXDelta,toXDelta是表达x轴方向移动距离shake.xml:<translatexmlns:android=""android:fromXDelta="0"android:toXDelta="30"android:duration="1000"android:interpolator="@anim/cycle_interpolator"/>cycleInterpolator.xml文献:<cycleInterpolatorxmlns:android=""android:cycles="3"/>抖动3次---------------------------------------------------------------------------------------------TextView动态设立背景色et.setBackgroundResource(R.color.white);---------------------------------------------------------------------------------------------防止ListView滚动时候背景闪烁,需加上android:cacheColorHint="#00000000"如果设立了listviewandroid:background="@drawable/background"就要加上android:cacheColorHint="#00000000"---------------------------------------------------------------------------------------------通过添加一种id为android:emptyTextView,当ListView里面没有data时候,就会显示TextView内容。<?xmlversion="1.0"encoding="utf-8"?><LinearLayoutxmlns:android=""android:layout_width="wrap_content"android:layout_height="wrap_content"><ListViewandroid:id="@id/android:list"android:layout_width="fill_parent"android:layout_height="fill_parent"/><TextViewandroid:id="@id/android:empty"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="对不起,没有数据显示"/></LinearLayout>需要注意是,ListViewid,使用是"@id/android:list",即系统默认id,而紧接其后TextView,使用id也是系统默认,即"@id/android:empty"。---------------------------------------------------------------------------------------------自定义控件单行文本跑马灯控件importandroid.content.Context;importandroid.graphics.Canvas;importandroid.graphics.Paint;importandroid.os.Parcel;importandroid.os.Parcelable;importandroid.util.AttributeSet;importandroid.view.Display;importandroid.view.View;importandroid.view.WindowManager;importandroid.view.View.OnClickListener;importandroid.widget.TextView;/***//****TODO单行文本跑马灯控件**@authortianlu*@version1.0*CreateAt:-2-16下午09:35:03*/publicclassAutoScrollTextViewextendsTextViewimplementsOnClickListener{publicfinalstaticStringTAG=AutoScrollTextView.class.getSimpleName();privatefloattextLength=0f;//文本长度privatefloatviewWidth=0f;privatefloatstep=0f;//文字横坐标privatefloaty=0f;//文字纵坐标privatefloattemp_view_plus_text_length=0.0f;//用于计算暂时变量privatefloattemp_view_plus_two_text_length=0.0f;//用于计算暂时变量publicbooleanisStarting=false;//与否开始滚动privatePaintpaint=null;//绘图样式privateStringtext="";//文本内容publicAutoScrollTextView(Contextcontext){super(context);initView();}publicAutoScrollTextView(Contextcontext,AttributeSetattrs){super(context,attrs);initView();}publicAutoScrollTextView(Contextcontext,AttributeSetattrs,intdefStyle){super(context,attrs,defStyle);initView();}/***//***初始化控件*/privatevoidinitView(){setOnClickListener(this);}/***//***文本初始化,每次更改文本内容或者文本效果等之后都需要重新初始化一下*/publicvoidinit(WindowManagerwindowManager){paint=getPaint();text=getText().toString();textLength=paint.measureText(text);viewWidth=getWidth();if(viewWidth==0){if(windowManager!=null){Displaydisplay=windowManager.getDefaultDisplay();viewWidth=display.getWidth();}}step=textLength;temp_view_plus_text_length=viewWidth+textLength;temp_view_plus_two_text_length=viewWidth+textLength*2;y=getTextSize()+getPaddingTop();}@OverridepublicParcelableonSaveInstanceState(){ParcelablesuperState=super.onSaveInstanceState();SavedStatess=newSavedState(superState);ss.step=step;ss.isStarting=isStarting;returnss;}@OverridepublicvoidonRestoreInstanceState(Parcelablestate){if(!(stateinstanceofSavedState)){super.onRestoreInstanceState(state);return;}SavedStatess=(SavedState)state;super.onRestoreInstanceState(ss.getSuperState());step=ss.step;isStarting=ss.isStarting;}publicstaticclassSavedStateextendsBaseSavedState{publicbooleanisStarting=false;publicfloatstep=0.0f;SavedState(ParcelablesuperState){super(superState);}@OverridepublicvoidwriteToParcel(Parcelout,intflags){super.writeToParcel(out,flags);out.writeBooleanArray(newboolean[]{isStarting});out.writeFloat(step);}publicstaticfinalParcelable.Creator<SavedState>CREATOR=newParcelable.Creator<SavedState>(){publicSavedState[]newArray(intsize){returnnewSavedState[size];}@OverridepublicSavedStatecreateFromParcel(Parcelin){returnnewSavedState(in);}};privateSavedState(Parcelin){super(in);boolean[]b=null;in.readBooleanArray(b);if(b!=null&&b.length>0)isStarting=b[0];step=in.readFloat();}}/***//***开始滚动*/publicvoidstartScroll(){isStarting=true;invalidate();}/***//***停止滚动*/publicvoidstopScroll(){isStarting=false;invalidate();}@OverridepublicvoidonDraw(Canvascanvas){canvas.drawText(text,temp_view_plus_text_length-step,y,paint);if(!isStarting){return;}step+=0.5;if(step>temp_view_plus_two_text_length)step=textLength;invalidate();}@OverridepublicvoidonClick(Viewv){if(isStarting)stopScroll();elsestartScroll();}}实现了宽度判断,文本自动滚动及开始和停止滚动等功能。在UIxml中配备如下:<cn.tigertian.ui.AutoScrollTextViewandroid:id="@+id/TextViewNotice"android:layout_height="30px"android:layout_width="fill_parent"android:text="@string/test_notice_1"android:textColor="#000"android:inputType="text"android:background="#EEE"android:textSize="20px"></cn.tigertian.ui.AutoScrollTextView>在Activity中用法如下://启动公示滚动条autoScrollTextView=(AutoScrollTextView)findViewById(R.id.TextViewNotice);autoScrollTextView.init(getWindowManager());autoScrollTextView.startScroll();如果想变化跑马灯文字内容或者文字效果,则在调用完setText办法之后,需要再调用一下init(WindowManagerwindowManager)办法,重新进行初始化和有关参数计算。---------------------------------------------------------------------------------------------大概意思是。@和?都是用来引用其她已经定义好资源。@引用是之前定义好资源当前项目或者androidframework里。而?则是引用当前加载样式文献里。意思就是说你在xml里某行定义了一种资源,在下面某行需要引用这个资源时用?即可---------------------------------------------------------------------------------------------TabHost两种实现方式文章分类:Java编程第一种:继承TabActivity,从TabActivity中用getTabHost()办法获取TabHost。只要定义详细Tab内容布局就行了.xml布局:Java代码<FrameLayoutxmlns:android=""android:layout_width="fill_parent"android:layout_height="fill_parent"><LinearLayoutandroid:id="@+id/widget_layout_Blue"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical"><EditTextandroid:id="@+id/widget34"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="EditText"android:textSize="18sp"></EditText><Buttonandroid:id="@+id/widget30"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="Button"></Button></LinearLayout><LinearLayoutandroid:id="@+id/widget_layout_red"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical"><AnalogClockandroid:id="@+id/widget36"android:layout_width="wrap_content"android:layout_height="wrap_content"></AnalogClock></LinearLayout><LinearLayoutandroid:id="@+id/widget_layout_green"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical"><RadioGroupandroid:id="@+id/widget43"android:layout_width="166px"android:layout_height="98px"android:orientation="vertical"><RadioButtonandroid:id="@+id/widget44"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="RadioButton"></RadioButton><RadioButtonandroid:id="@+id/widget45"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="RadioButton"></RadioButton></RadioGroup></LinearLayout></FrameLayout>java代码:super.onCreate(savedInstanceState);myTabhost=this.getTabHost();//getTabhostLayoutInflater.from(this).inflate(R.layout.main,myTabhost.getTabContentView(),true);myTabhost.setBackgroundColor(Color.argb(150,22,70,150));myTabhost.addTab(myTabhost.newTabSpec("One")//makeanewTab.setIndicator("A")//settheTitleandIcon.setContent(R.id.widget_layout_Blue));//setthelayoutmyTabhost.addTab(myTabhost.newTabSpec("Two")//makeanewTab.setIndicator("B",getResources().getDrawable(R.drawable.mumule))//settheTitleandIcon.setContent(R.id.widget_layout_green));//setthelayoutmyTabhost.addTab(myTabhost.newTabSpec("Three")//makeanewTab.setIndicator("C",getResources().getDrawable(R.drawable.notepad))//settheTitleandIcon.setContent(R.id.widget_layout_red));<FrameLayoutxmlns:android="" android:layout_width="fill_parent"android:layout_height="fill_parent"> <LinearLayoutandroid:id="@+id/widget_layout_Blue" android:layout_width="fill_parent"android:layout_height="fill_parent" android:orientation="vertical"> <EditTextandroid:id="@+id/widget34"android:layout_width="fill_parent" android:layout_height="wrap_content"android:text="EditText" android:textSize="18sp"> </EditText> <Buttonandroid:id="@+id/widget30"android:layout_width="wrap_content" android:layout_height="wrap_content"android:text="Button"> </Button> </LinearLayout> <LinearLayoutandroid:id="@+id/widget_layout_red" android:layout_width="fill_parent"android:layout_height="fill_parent" android:orientation="vertical"> <AnalogClockandroid:id="@+id/widget36" android:layout_width="wrap_content"android:layout_height="wrap_content"> </AnalogClock> </LinearLayout> <LinearLayoutandroid:id="@+id/widget_layout_green" android:layout_width="fill_parent"android:layout_height="fill_parent" android:orientation="vertical"> <RadioGroupandroid:id="@+id/widget43" android:layout_width="166px"android:layout_height="98px" android:orientation="vertical"> <RadioButtonandroid:id="@+id/widget44" android:layout_width="wrap_content"android:layout_height="wrap_content" android:text="RadioButton"> </RadioButton> <RadioButtonandroid:id="@+id/widget45" android:layout_width="wrap_content"android:layout_height="wrap_content" android:text="RadioButton"> </RadioButton> </RadioGroup> </LinearLayout></FrameLayout>java代码:super.onCreate(savedInstanceState); myTabhost=this.getTabHost(); //getTabhost LayoutInflater.from(this).inflate(R.layout.main,myTabhost.getTabContentView(),true); myTabhost.setBackgroundColor(Color.argb(150,22,70,150)); myTabhost .addTab(myTabhost.newTabSpec("One")//makeanewTab .setIndicator("A") //settheTitleandIcon .setContent(R.id.widget_layout_Blue)); //setthelayout myTabhost .addTab(myTabhost.newTabSpec("Two")//makeanewTab .setIndicator("B", getResources().getDrawable(R.drawable.mumule)) //settheTitleandIcon .setContent(R.id.widget_layout_green)); //setthelayout myTabhost .addTab(myTabhost.newTabSpec("Three")//makeanewTab .setIndicator("C", getResources().getDrawable(R.drawable.notepad)) //settheTitleandIcon .setContent(R.id.widget_layout_red));第二种:不用继承TabActivity,在布局文献中定义TabHost即可,但是TabWidgetid必要是@android:id/tabs,FrameLayoutid必要是@android:id/tabcontent。TabHostid可以自定义.xml布局:Java代码<?xmlversion="1.0"encoding="utf-8"?><LinearLayoutxmlns:android=""android:id="@+id/hometabs"android:orientation="vertical"android:layout_width="fill_parent"android:layout_height="fill_parent"><TabHostandroid:id="@+id/tabhost"android:layout_width="wrap_content"android:layout_height="wrap_content"><LinearLayoutandroid:orientation="vertical"android:layout_width="fill_parent"android:layout_height="fill_parent"><TabWidgetandroid:id="@android:id/tabs"android:orientation="horizontal"android:layout_width="wrap_content"android:layout_height="wrap_content"></TabWidget><FrameLayoutandroid:id="@android:id/tabcontent"android:layout_width="wrap_content"android:layout_height="wrap_content"><TextViewandroid:id="@+id/view1"android:layout_width="fill_parent"android:layout_height="fill_parent"/><TextViewandroid:id="@+id/view2"android:layout_width="fill_parent"android:layout_height="fill_parent"/><TextViewandroid:id="@+id/view3"android:layout_width="fill_parent"android:layout_height="fill_parent"/></FrameLayout></LinearLayout></TabHost></LinearLayout>java代码:protectedvoidonCreate(BundlesavedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.hometabs);TabHosttabHost=(TabHost)findViewById(R.id.tabhost);tabHost.setup();TabWidgettabWidget=tabHost.getTabWidget();tabHost.addTab(tabHost.newTabSpec("tab1").setIndicator("tab1",getResources().getDrawable(R.drawable.mumule)).setContent(R.id.view1));tabHost.addTab(tabHost.newTabSpec("tab3").setIndicator("tab3").setContent(R.id.view3));tabHost.addTab(tabHost.newTabSpec("tab2").setIndicator("tab2").setContent(R.id.view2));finalinttabs=tabWidget.getChildCount();Log.i(TAG,"***tabWidget.getChildCount():"+tabs);finalinttabWidth=90;finalinttabHeight=45;for(inti=0;i<tabs;i++){/*finalViewview=tabWidget.getChildAt(i);view.getLayoutParams().width=tabWidth;view.getLayoutParams().height=tabHeight;finalTextViewtv=(TextView)view.findViewById(android.R.id.title);tv.setTextColor(this.getResources().getColorStateList(android.R.color.black));MarginLayoutParamstvMLP=(MarginLayoutParams)tv.getLayoutParams();tvMLP.bottomMargin=8;*/}}---------------------------------------------------------------------------------------------TextView显示图片和文字TextViewtext=(TextView